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Bewertung heterogener Altlasten durch Probenahme, statistische und geostatistische Modellierung
Authors:Winfried Rasemann  Martin Herbst
Institution:1. IQS Freiberg-Institut für Qualit?tssicherung von Stoffsystemen Freiberg e. V. an der TU Bergakademie Freiberg, Gustav-Zeuner-Stra?e 12, D-09596, Freiberg
2. Graduiertenkolleg “R?umliche Statistik”, TU Bergakademie Freiberg, Leipziger Stra?e 34, D-09596, Freiberg
Abstract:A slack heap in Saxony serves as an example for the model procedure of evaluation heterogeneous waste sites via sampling as well as statistical and geostatistical data analysis. This paper demonstrates the usefulness of the known regulations for sampling and of the tried and proven geostatistical methods developed for assessing homogeneous wastes and the concornitantly contaminated soil. Emphasized here are the contents of iron and sulfur. Considered in addition are the concentrations of arsenic and the heat loss. To establish a conclusion, the variograms of the original data are used to evaluate the waste site in different directions and at determined depths. With the aid of a spot interpolation, further data can be calculated for additional sites which have not been sampled and can be used consequently for displaying the spatial variability. Finally, the statistical data analysis is applied using the standard methods of random sampling as an alternative to the geostatistical modeling. In this manner, the consequences for the sampling strategy can be demonstrated.
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